/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.geode.internal.offheap;

import org.apache.geode.Statistics;

/**
 * Statistics for off-heap memory storage.
 * 
 * @since Geode 1.0
 */
public interface OffHeapMemoryStats {

  public void incFreeMemory(long value);
  public void incMaxMemory(long value);
  public void incUsedMemory(long value);
  public void incObjects(int value);
  public void incReads();
  public void setFragments(long value);
  public void setLargestFragment(int value);
  public long startDefragmentation();
  public void endDefragmentation(long start);
  public void setFragmentation(int value);
  
  public long getFreeMemory();
  public long getMaxMemory();
  public long getUsedMemory();
  public long getReads();
  public int getObjects();
  public int getDefragmentations();
  public int getDefragmentationsInProgress();
  public long getFragments();
  public int getLargestFragment();
  public int getFragmentation();
  public long getDefragmentationTime();
  
  public Statistics getStats();
  public void close();
  public void initialize(OffHeapMemoryStats stats);
}
